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通过电阻率测量研究了Ｋ原子在Ｃ６０单晶中的扩散深度与时间的关系，得出温度为２３０℃时Ｋ原子在Ｃ６０单晶中的扩散系数约为１０－１５ｍ２ｓ－１．由扩散系数估算出制备０．１ｍｍ厚Ｋ３Ｃ６０单晶约需１４５２小时扩散时间，而１ｍｍ厚单晶约需１６年，因而毫米级Ｋ３Ｃ６０单晶几乎是不可能制成的，对Ｋ原子扩散通量的计算结果表明，要使样品中（尤其是表面附近）不形成Ｋ６Ｃ６０相，扩散初期样品附近Ｋ蒸气的压强不宜超过１×１０－６Ｔｏｒ，并应随时间的（－１／２）次方而减小．在这个工作基础上，对文献中一些矛盾的结果作了较为满意的解释．
The diffusion depth of K atom in C60 single crystal was studied by resistivity measurement. The diffusion coefficient of K atom in C60 single crystal was about 10-15m2s-1 at 230 ℃. It is estimated from the diffusion coefficient that a 0.1mm thick K3C60 single crystal takes about 1452 hours to diffuse, whereas a 1mm thick single crystal takes about 16 years. Thus, a millimeter-scale K3C60 single crystal is almost impossible to produce, and the K atom diffusion flux The calculation results show that for the K6C60 phase not to form in the sample (especially near the surface), the pressure of K vapor in the vicinity of the initial diffusion should not exceed 1 × 10 -6 Tor and should be (-1/2) times Decrease On the basis of this work, some contradictory results in the literature made a more satisfactory explanation.